US4631015A - Molding apparatus with replaceable plunger and die set - Google Patents

Molding apparatus with replaceable plunger and die set Download PDF

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Publication number
US4631015A
US4631015A US06/261,221 US26122181A US4631015A US 4631015 A US4631015 A US 4631015A US 26122181 A US26122181 A US 26122181A US 4631015 A US4631015 A US 4631015A
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US
United States
Prior art keywords
mold
support
mold support
plunger
machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/261,221
Inventor
Iwasaki Shigeo
Haguchi Hiroshi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MITSU+ISHI FUKAI TEKKOSHO Ltd
Mitsuishi Fukai Tekkosho KK
Original Assignee
Mitsuishi Fukai Tekkosho KK
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Publication date
Application filed by Mitsuishi Fukai Tekkosho KK filed Critical Mitsuishi Fukai Tekkosho KK
Priority to US06/261,221 priority Critical patent/US4631015A/en
Assigned to MITSU+ISHI FUKAI TEKKOSHO, LTD. reassignment MITSU+ISHI FUKAI TEKKOSHO, LTD. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HAGUCHI, HIROSHI, IWASAKI, SHIGEO
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Publication of US4631015A publication Critical patent/US4631015A/en
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Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/009—Changing the forming elements, e.g. exchanging moulds, dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/028—Loading or unloading of dies, platens or press rams
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S100/00—Presses
    • Y10S100/918—Bolster and die

Definitions

  • This invention relates to a forming maching for bricks, etc.
  • the invention provides a new concept in reducing the excessively long time required for changing metallic molds in the conventional brick forming machines in order to achieve higher efficiency in brick production.
  • the metallic mold sits on the metallic mold support and receives the brick material into its inside.
  • the upper plunger is driven by a hydraulic cylinder placed on the upper center of the machine to press the brick material in the metallic mold between itself and the stationary lower plunger.
  • the metallic mold support is driven by hydraulic cylinders mounted on the right and left columns of the machine to fasten the metallic mold while the brick is being pressed.
  • FIG. 1 is a partial cross-sectional elevation of an embodiment of the invention
  • FIG. 2 is a side elevation of another embodiment also partially in cross-section
  • FIG. 3 is a cross section of FIG. 1 on the line III--III;
  • FIG. 4 is a perspective view of the whole metallic mold support.
  • FIG. 5 is a plan view of the metallic mold transfer truck.
  • the metallic mold (1) receives brick material supplied into it and it sits on the metallic mold support (4).
  • the upper plunger (2) is driven by the hydraulic cylinders (9) mounted on the upper frame 6 of the machine through the pusher block (8) to press the material downwards in the metallic mold (1) between itself and the lower plunger (3) that is stationary.
  • FIG. 2 there are two pairs of wedges (11) provided in front of and at the back of the metallic mold (1). Those wedges are driven by hydraulic cylinders (10) to advance and retreat. When they advance they engage the inclined faces of the protrusions on the front and rear sides of the metallic mold (1), so as to fix it by pressing it down.
  • the metallic mold (1), and plungers (2) and (3) are of such dimension as to form a set of components fitted together, and they are as a whole movable in and out of the metallic mold support (4) rapidly as described below, which saves time in changing the metallic mold (1) and plungers (2) and (3) in the conventional forming machines for bricks, etc.
  • the metallic mold support (4) is shaped a square frame with its one side open like the letter U laid flat on its face.
  • the metallic mold (1), upper and lower plungers (2) and (3) form a combination of components put together beforehand in the operation of the machine and they are placed inside the metallic mold support (4), and after the forming operation they are withdrawn through the opening.
  • the protrusions of the metallic mold (1) are above it and the upper and lower plungers (2) and (3) which have in common the center line of the metallic mold (1) and the metallic mold (1) can freely move on a transfer truck (16) in the direction perpendicular to the sheet of paper of the figure.
  • the bottom flange of the metallic mold support (4) will contact the protrusions of the metallic mold (1).
  • the transfer truck (16) has upward protruding pins (15), and they fit into the holes (14) of the metallic mold (1) to position it correctly.
  • the lower end of the transfer truck (16) has rollers (17), which roll back and forth on the transfer rails (19) and the positioning rails (7).
  • the transfer truck is also shaped as shown in FIG. 5 like the letter U laid flat on its face to give an opening for the lower plunger (3) to pass through.
  • a metallic mold (1) and upper and lower plungers (2) and (3) to replace a previously removed set move on the transfer truck (16) through the opening of the U-shaped metallic mold support (4) into the metallic mold support (4) and their center line is aligned with the center line of the metallic mold support (4) and the transfer truck (16) stops at the correct position by coming against the stop (18) placed on the positioning rails (7).
  • the metallic mold support (4) is raised by the hydraulic cylinders (5).
  • the engagement of the pins (12) and the holes (13) guides the protrusions of the metallic mold (1) to place it correctly on the metallic mold support (4).
  • the metallic pattern (1) and the upper and lower plungers (2) and (3) are lifted off the transfer truck (16), and the truck (16) is shifted to the left in FIG. 2 out of the machine.
  • the metallic mold (1) on the support (4) is fastened to it by the advance of the hydraulic cylinders (10) and wedges (11), and after this the metallic mold support (4) is lifted up to mount the upper plunger (2) on the pressure block (8). Then the metallic mold support (4) is lowered until the bottom of the lower plunger hits the bottom face of the frame (6). With the lower plunger (3) on the frame (6), the former is fixed on the latter with the bolts, etc. This concludes the installation of a new metallic mold and the plungers.
  • the removal of the metallic mold (1) from the machine follows the steps as described above for the installation of a new one in the reverse order.
  • the metallic pattern and the upper and lower plungers are assembled with their center lines in alignment at a place out of the machine.
  • Positioning of the metallic mold and upper and lower plungers can be effected automatically and accurately.
  • the invention provides an improved forming machine for bricks, etc. which has shown significant benefits in actual operation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

A molding machine for making bricks, etc. having a mold open on both ends and opposed plungers for cooperation with the mold, the mold and plungers being removable and replaceable as a set.

Description

This invention relates to a forming maching for bricks, etc. The invention provides a new concept in reducing the excessively long time required for changing metallic molds in the conventional brick forming machines in order to achieve higher efficiency in brick production.
TECHNICAL BACKGROUND
In a conventional brick forming machine, the metallic mold sits on the metallic mold support and receives the brick material into its inside. The upper plunger is driven by a hydraulic cylinder placed on the upper center of the machine to press the brick material in the metallic mold between itself and the stationary lower plunger. The metallic mold support is driven by hydraulic cylinders mounted on the right and left columns of the machine to fasten the metallic mold while the brick is being pressed.
Every time the shape or size of the bricks being formed are changed, the metallic mold, and the upper and lower plungers have to be changed. While they are being changed, the forming operation is interrupted, and the time needed for the change is long. The production efficiency is, therefore, low in general as compared with the conventional brick forming machines.
DISCLOSURE OF INVENTION
In the present invention a new technical concept for the forming machines for bricks, etc. is presented, in which a combination of a metallic mold and upper and lower plungers with a certain dimension can be together rapidly put into the metallic mold support and also withdrawn to introduce into the metallic mold support different combinations of metallic mold and upper and lower plungers.
The forming machine for bricks, etc. according to the invention is described in detail hereinafter in connection with embodiments of the invention and as shown in the accompanying drawings, in which:
FIG. 1 is a partial cross-sectional elevation of an embodiment of the invention;
FIG. 2 is a side elevation of another embodiment also partially in cross-section;
FIG. 3 is a cross section of FIG. 1 on the line III--III;
FIG. 4 is a perspective view of the whole metallic mold support; and
FIG. 5 is a plan view of the metallic mold transfer truck.
In FIG. 1, FIG. 2 and FIG. 3, the metallic mold (1) receives brick material supplied into it and it sits on the metallic mold support (4). The upper plunger (2) is driven by the hydraulic cylinders (9) mounted on the upper frame 6 of the machine through the pusher block (8) to press the material downwards in the metallic mold (1) between itself and the lower plunger (3) that is stationary. There are holes (13) in the bottom face of the metallic mold support (4), and protruding pins (12) of the metallic mold fit into the holes (13) to position the metallic mold (1) properly. In the embodiment of FIG. 2 there are two pairs of wedges (11) provided in front of and at the back of the metallic mold (1). Those wedges are driven by hydraulic cylinders (10) to advance and retreat. When they advance they engage the inclined faces of the protrusions on the front and rear sides of the metallic mold (1), so as to fix it by pressing it down.
In the embodiments of the invention in FIG. 1 and FIG. 2, the metallic mold (1), and plungers (2) and (3) are of such dimension as to form a set of components fitted together, and they are as a whole movable in and out of the metallic mold support (4) rapidly as described below, which saves time in changing the metallic mold (1) and plungers (2) and (3) in the conventional forming machines for bricks, etc.
In a preferred embodiment of the invention, the metallic mold support (4) is shaped a square frame with its one side open like the letter U laid flat on its face. The metallic mold (1), upper and lower plungers (2) and (3) form a combination of components put together beforehand in the operation of the machine and they are placed inside the metallic mold support (4), and after the forming operation they are withdrawn through the opening. At the position of the metallic molds support (4) as shown by the broken lines in FIG. 1, the protrusions of the metallic mold (1) are above it and the upper and lower plungers (2) and (3) which have in common the center line of the metallic mold (1) and the metallic mold (1) can freely move on a transfer truck (16) in the direction perpendicular to the sheet of paper of the figure. When the metallic mold support (4) is raised, the bottom flange of the metallic mold support (4) will contact the protrusions of the metallic mold (1).
On the other hand in FIG. 1 and FIG. 2 the transfer truck (16) has upward protruding pins (15), and they fit into the holes (14) of the metallic mold (1) to position it correctly. The lower end of the transfer truck (16) has rollers (17), which roll back and forth on the transfer rails (19) and the positioning rails (7). The transfer truck is also shaped as shown in FIG. 5 like the letter U laid flat on its face to give an opening for the lower plunger (3) to pass through.
According to the construction of the preferred embodiments in FIG. 1 and FIG. 2 and above described, a metallic mold (1) and upper and lower plungers (2) and (3) to replace a previously removed set move on the transfer truck (16) through the opening of the U-shaped metallic mold support (4) into the metallic mold support (4) and their center line is aligned with the center line of the metallic mold support (4) and the transfer truck (16) stops at the correct position by coming against the stop (18) placed on the positioning rails (7).
Next, the metallic mold support (4) is raised by the hydraulic cylinders (5). In the ascending of the metallic mold support (4), the engagement of the pins (12) and the holes (13) guides the protrusions of the metallic mold (1) to place it correctly on the metallic mold support (4). With further ascending of the metallic mold support (4), the metallic pattern (1) and the upper and lower plungers (2) and (3) are lifted off the transfer truck (16), and the truck (16) is shifted to the left in FIG. 2 out of the machine.
The metallic mold (1) on the support (4) is fastened to it by the advance of the hydraulic cylinders (10) and wedges (11), and after this the metallic mold support (4) is lifted up to mount the upper plunger (2) on the pressure block (8). Then the metallic mold support (4) is lowered until the bottom of the lower plunger hits the bottom face of the frame (6). With the lower plunger (3) on the frame (6), the former is fixed on the latter with the bolts, etc. This concludes the installation of a new metallic mold and the plungers. The removal of the metallic mold (1) from the machine follows the steps as described above for the installation of a new one in the reverse order.
It can be easily seen that it is not an easy task to move the metallic molds (1) and upper and lower plungers (2) and (3) individually avoiding interference with the body of the machine and to position them correctly at the prescribed places. On the other hand the merits listed below are obtainable according to the invention:
1. The metallic pattern and the upper and lower plungers are assembled with their center lines in alignment at a place out of the machine.
2. Positioning of the metallic mold and upper and lower plungers can be effected automatically and accurately.
3. The fastening of the upper and lower plungers to the frame with bolts is simple.
The invention provides an improved forming machine for bricks, etc. which has shown significant benefits in actual operation.

Claims (2)

We claim:
1. A machine for forming bricks, comprising:
a horizontal mold support having an open center and one side open;
support moving fluid pressure cylinders on which said mold support is mounted for vertical movement in said machine;
an upper fluid pressure cylinder above said open center for exerting a downward thrust;
replaceable sets each consisting of an upper plunger, a metallic mold having an open upper end into which said plunger fits for compressing brick material within said mold and an open lower end, and a lower plunger which fits into the open lower end of said mold for compressing brick material within said mold, an upper plunger, metallic mold and lower plunger when in position in said machine being aligned vertically with said upper fluid pressure cylinder, and having said mold removably held within said mold support, and said lower plunger having a diameter less than the open side of said mold support for being movable out of said mold support through said open side;
whereby when said replaceable set is positioned in said machine, the upper fluid pressure cylinder can press the plungers downwardly with said lower plunger against the bottom of the machine, and said support moving fluid pressure cylinders can move said mold support with said mold relative to said plungers, and when it is desired to replace said set, said mold support can be moved downwardly until said open side is aligned with said lower plunger, and said set can be moved laterally out of said mold support and be replaced by a set of a different mold and an upper and a lower plunger.
2. A machine as claimed in claim 1 in which said mold support has a ledge around the inside thereof, and said mold has laterally projecting portions which, when the mold is in said mold support, rest on said ledge, and laterally movable wedges in said mold support movable laterally to engage the upper sides of said laterally projecting portions on said mold for holding said mold tightly in said mold support.
US06/261,221 1981-05-08 1981-05-08 Molding apparatus with replaceable plunger and die set Expired - Fee Related US4631015A (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4760783A (en) * 1986-07-09 1988-08-02 Ngk Insulators, Ltd. Compression apparatus having a main compression device and a tapered precompression device
US4768430A (en) * 1984-10-02 1988-09-06 Ngk Insulators, Ltd. Compression apparatus having grooved compression sleeve and press ram
US4947673A (en) * 1989-04-13 1990-08-14 Connell Limited Partnership Removable slide presses
US5002711A (en) * 1984-07-11 1991-03-26 Chiyoda Technical & Industrial Company Ltd. Method and apparatus for setting pattern frame and press die in instant-release type molding machine for concrete product
US5256053A (en) * 1990-12-26 1993-10-26 Kabushiki Kaisha Mitsuishi Fukai Tekkosho Brick press
US5277570A (en) * 1992-03-30 1994-01-11 Siggers David L Press for pressing a compressible material
US5362434A (en) * 1991-09-11 1994-11-08 Laeis- Bucher Gmbh Vertical press and process for operating the same
DE4336744A1 (en) * 1993-10-28 1995-05-04 Manfred Gillenberg Device on a press for the production of mouldings
US5613433A (en) * 1993-01-15 1997-03-25 Compagnie Generale Des Matieres Nucleaires Compacting method and apparatus, particularly adapted to compacting hazardous materials
US6116890A (en) * 1997-10-02 2000-09-12 Commissariat A L'energie Atomique Press for forming pellets
US20050105674A1 (en) * 2003-07-22 2005-05-19 Compagnie Generale Des Matieres Nucleaires Compacting press
AT502360B1 (en) * 2004-11-17 2007-05-15 Mpt Metal Press Tec Gmbh PRESS FOR THE PRODUCTION OF A STAINLESS FORM BODY FROM POWDER
CN100418753C (en) * 2006-04-28 2008-09-17 郑良才 Preset hydro-cylinder type four column press
US20100136180A1 (en) * 2007-02-01 2010-06-03 Nestec S.A. Method and apparatus for making centre-filled shaped food products
CN101676096B (en) * 2008-09-16 2012-11-21 许维群 Full-automatic powder hydraulic forming machine and pressing technique thereof
WO2015192894A1 (en) * 2014-06-17 2015-12-23 Jolyan Holding Sa Device for the quick change of presses for ceramic products

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US372262A (en) * 1887-10-25 Chaeles l
US866999A (en) * 1906-11-14 1907-09-24 Avram Leet Engineering Company Press.
US3143413A (en) * 1960-06-03 1964-08-04 Siegfried G Krapf Ceramic materials and methods for their manufacture
US3153833A (en) * 1959-05-19 1964-10-27 P A Mackin Block making machine
US3561056A (en) * 1968-10-15 1971-02-09 Wolverine Pentronix Tool set for powder compacting press
US3593366A (en) * 1968-12-11 1971-07-20 Wolverine Pentronix Multiple punch tool set for powder compacting press
US3610021A (en) * 1969-03-07 1971-10-05 Albert Trostel Packings Ltd Universal die set with quick change die plates
US3794458A (en) * 1971-08-02 1974-02-26 Mitsuishi Fukai Iron Works Vacuum brick press having movable loading and unloading means
US4412800A (en) * 1978-12-04 1983-11-01 Dorsey Robert J Mold assembly for compressing refractory material and including a quick change mold box

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US372262A (en) * 1887-10-25 Chaeles l
US866999A (en) * 1906-11-14 1907-09-24 Avram Leet Engineering Company Press.
US3153833A (en) * 1959-05-19 1964-10-27 P A Mackin Block making machine
US3143413A (en) * 1960-06-03 1964-08-04 Siegfried G Krapf Ceramic materials and methods for their manufacture
US3561056A (en) * 1968-10-15 1971-02-09 Wolverine Pentronix Tool set for powder compacting press
US3593366A (en) * 1968-12-11 1971-07-20 Wolverine Pentronix Multiple punch tool set for powder compacting press
US3610021A (en) * 1969-03-07 1971-10-05 Albert Trostel Packings Ltd Universal die set with quick change die plates
US3794458A (en) * 1971-08-02 1974-02-26 Mitsuishi Fukai Iron Works Vacuum brick press having movable loading and unloading means
US4412800A (en) * 1978-12-04 1983-11-01 Dorsey Robert J Mold assembly for compressing refractory material and including a quick change mold box

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5002711A (en) * 1984-07-11 1991-03-26 Chiyoda Technical & Industrial Company Ltd. Method and apparatus for setting pattern frame and press die in instant-release type molding machine for concrete product
US4768430A (en) * 1984-10-02 1988-09-06 Ngk Insulators, Ltd. Compression apparatus having grooved compression sleeve and press ram
US4809600A (en) * 1984-10-02 1989-03-07 Ngk Insulators, Ltd. Compression apparatus having precompression device and main compression device
US4760783A (en) * 1986-07-09 1988-08-02 Ngk Insulators, Ltd. Compression apparatus having a main compression device and a tapered precompression device
US4947673A (en) * 1989-04-13 1990-08-14 Connell Limited Partnership Removable slide presses
US5256053A (en) * 1990-12-26 1993-10-26 Kabushiki Kaisha Mitsuishi Fukai Tekkosho Brick press
US5362434A (en) * 1991-09-11 1994-11-08 Laeis- Bucher Gmbh Vertical press and process for operating the same
US5277570A (en) * 1992-03-30 1994-01-11 Siggers David L Press for pressing a compressible material
US5613433A (en) * 1993-01-15 1997-03-25 Compagnie Generale Des Matieres Nucleaires Compacting method and apparatus, particularly adapted to compacting hazardous materials
DE4336744A1 (en) * 1993-10-28 1995-05-04 Manfred Gillenberg Device on a press for the production of mouldings
US6116890A (en) * 1997-10-02 2000-09-12 Commissariat A L'energie Atomique Press for forming pellets
US20050105674A1 (en) * 2003-07-22 2005-05-19 Compagnie Generale Des Matieres Nucleaires Compacting press
US7178455B2 (en) * 2003-07-22 2007-02-20 Compagnie Generale Des Matieres Nucleaires Compacting press
AT502360B1 (en) * 2004-11-17 2007-05-15 Mpt Metal Press Tec Gmbh PRESS FOR THE PRODUCTION OF A STAINLESS FORM BODY FROM POWDER
CN100418753C (en) * 2006-04-28 2008-09-17 郑良才 Preset hydro-cylinder type four column press
US20100136180A1 (en) * 2007-02-01 2010-06-03 Nestec S.A. Method and apparatus for making centre-filled shaped food products
US8876521B2 (en) * 2007-02-01 2014-11-04 Nestec S.A. Method and apparatus for making centre-filled shaped food products
CN101676096B (en) * 2008-09-16 2012-11-21 许维群 Full-automatic powder hydraulic forming machine and pressing technique thereof
WO2015192894A1 (en) * 2014-06-17 2015-12-23 Jolyan Holding Sa Device for the quick change of presses for ceramic products

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